20136620542377 has 4 divisors (see below), whose sum is σ = 26848827389840. Its totient is φ = 13424413694916.

The previous prime is 20136620542369. The next prime is 20136620542403. The reversal of 20136620542377 is 77324502663102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20136620542377 - 2³ = 20136620542369 is a prime.

It is a super-3 number, since 3×20136620542377³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20136620542307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3356103423727 + ... + 3356103423732.

It is an arithmetic number, because the mean of its divisors is an integer number (6712206847460).

Almost surely, 2^{20136620542377} is an apocalyptic number.

It is an amenable number.

20136620542377 is a deficient number, since it is larger than the sum of its proper divisors (6712206847463).

20136620542377 is an equidigital number, since it uses as much as digits as its factorization.

20136620542377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6712206847462.

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 20136620542377 in words is "twenty trillion, one hundred thirty-six billion, six hundred twenty million, five hundred forty-two thousand, three hundred seventy-seven".